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经营范围
发明名称
RADIAL MINING METHOD
摘要
申请公布号
AU521918(B2)
申请公布日期
1982.05.06
申请号
AU19780032853
申请日期
1978.01.31
申请人
ROYE, H.L.
发明人
HENRY L. ROYE
分类号
E21C41/00;E21C41/18;E21D23/00;E21F1/00;E21F13/08;(IPC1-7):E21C41/00
主分类号
E21C41/00
代理机构
代理人
主权项
地址
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